ApplyForce keeps an object moving

I know an object in motion stays in motion. However, I studied sample 3 in the Farseer Samples project and noticed nothing that is keeping the body with multiple fixtures from stopping after force is applied that is not also being applied to a body with
a single fixture. I also notice this for the ragdoll example.

In my game my object keeps moving after force is applied although I'd expect it to slow down eventually, but it doesn't.
Is there something I am missing or missed from the samples that I have not applied to my world or object?